diff --git a/src/Message.cpp b/src/Message.cpp
index 9b27f61484..6965b28e40 100644
--- a/src/Message.cpp
+++ b/src/Message.cpp
@@ -10,7 +10,7 @@
 #include "WireDecoder.h"
 #include "WireEncoder.h"
 
-static constexpr unsigned long kClearAllMagic = 0xD06CB27Aul;
+#define kClearAllMagic 0xD06CB27Aul
 
 using namespace nt;